#pragma once
#include <string_view>
#include <cstdint>

namespace fxn
{
    inline constexpr char ToLower(const char c) noexcept
    {
        return (c >= 'A' && c <= 'Z') ? (c - 'A' + 'a') : c;
    }

    inline constexpr unsigned int HashString(std::string_view str) noexcept
    {
        std::uint32_t hash = 0;

        for (char ch : str)
        {
            hash += ToLower(ch);
            hash += (hash << 10);
            hash ^= (hash >> 6);
        }

        hash += (hash << 3);
        hash ^= (hash >> 11);
        hash += (hash << 15);

        return hash;
    }
}